<template>
  <h4>当前x.y值是:{{x.y}}</h4>
  <button @click="x={y:888}">点我替换x</button>
  <button @click="x.y++">点我替换x.y++</button>
  <hr>
  <h2>姓名:{{name}}</h2>
  <h2>年龄:{{age}}</h2>
  <h2>薪资:{{job.j1.salary}}k</h2>
  <button @click="name+='~'">修改姓名</button>
  <button @click="age++">增长年龄</button>
  <button @click="job.j1.salary++">增长薪资</button>
</template>

<script>
import { ref,reactive,toRef,toRefs,shallowReactive,shallowRef } from "vue";
export default {
  name: 'Demo',
  setup() {
    //数据
    //let person = shallowReactive({ 只考虑第一层数据的响应式 })
    let person = reactive({
      name:'张三',
      age:18,
      job:{
        j1:{
          salary:20
          }
      }
    })
    let x = shallowRef({
      y:0
    })
    //返回一个对象（常用）
    return {
      x,
      person,
      ...toRefs(person)
    };
  },
};
</script>